Solidity Terms

Mappings

1. One way hash function.
2. Cannot loop through a mapping
3. On Demand Data Structure
4. Hash key then get results
5. A hash function is any function that can me bused to map data of arbitrary size to data of fixed size

contract MappingDemo {
struct Person {
 uint id;
 bytes32 name;
 bool isPerson;
}
mapping(address => Person) p;

}